do i have to use premium gas with the 3.8L supercharged?

**93F150** · 01-16-2012

my mom just got a 2000 grand prix gtp with the 3.8L supercharged in it and it says to use premium gas in it but does it really make a difference? i don't know much about these gm cars i'm more of an F-150 person so i figured i would ask on here. thanks

**TheOtherNick** · 01-16-2012

Yes you do.

**dpzelenak** · 01-16-2012

yes.
Thread/

**Fatboy501** · 01-16-2012

Nahhhh... not at all. Drive it to my house, we'll swap my n/a 3800 for her supercharged one, and she can use all of the 87 octane she pleases.

**Tuner-Extraordinaire** · 01-16-2012

Originally Posted by 93F150

my mom just got a 2000 grand prix gtp with the 3.8L supercharged in it and it says to use premium gas in it but does it really make a difference? i don't know much about these gm cars i'm more of an F-150 person so i figured i would ask on here. thanks

Yes use premium.

**93F150** · 01-16-2012

thanks guys!

**Fivefingerdeathpunch** · 01-16-2012

boost needs 91+

**dpzelenak** · 01-16-2012

yeaaaa
another thread just made by same OP

**dsmuts** · 04-03-2012

Spam^^^?

**BillBoost37** · 04-03-2012

While you were posting, I was banning as Spam.

OP, you need premium fuel or predetonation will occur due to the forced induction. Premium fuel combats predetonation and without it people chip pistons and destroy motors.

**jteske88** · 04-03-2012

yup if theres any type of boost involved i would run prem. and if you cant afford .30$ more i pitty you lmao

**alkygto** · 04-03-2012

Just take the blower belt off and you can run bilge water for fuel.

**smag** · 06-19-2012

Originally Posted by Jteske88

yup if theres any type of boost involved i would run prem. and if you cant afford .30$ more i pitty you lmao

it's actually $0.20 more.. not .30

but seriously.. it amounts to just a few dollars more for a full tank.. not a huge impact. the annual rise and drop of gas prices have bigger impact.. i.e. $4 vs. $3. also use GasBuddy app.. you can find stations which offer premium fuel at the same price or even lower than other stations price their regular at.

(sorry, i know the thread is a bit old.. found via google)

**Tuner-Extraordinaire** · 06-19-2012

$.35-50/c more for premium here still.

**addzradd** · 06-19-2012

Yes, definitely 93 or 94 octane, you may be able to get away with 91 if that's all you can find but I woulden't push it in hot weather.

**Fivefingerdeathpunch** · 06-19-2012

$.24 more for 93 here, it never changes.

**smag** · 06-19-2012

Originally Posted by Nixon

$.35-50/c more for premium here still.

wow, really? I thought it was .20 everywhere.. (in the US). We don't have the cheapest gas here (pacific NW), but premium (92 octane) is pretty much always .20 more, and plus is .10 more at most stations.

**dsmuts** · 06-20-2012

Only $0.15 more here at certain stations.

**Tuner-Extraordinaire** · 06-21-2012

Originally Posted by smag

wow, really? I thought it was .20 everywhere.. (in the US). We don't have the cheapest gas here (pacific NW), but premium (92 octane) is pretty much always .20 more, and plus is .10 more at most stations.

Yep, It's bad.

Costco is currently $3.109 for regular and $3.439 for premium.